How to Evaluate the Pros and Cons of Fully Automatic Thermoforming Machine Products
How to Evaluate the Pros and Cons of Fully Automatic Thermoforming Machine Products
In recent years, with the continuous progress of thermoforming technology and the increasing diversification of packaging needs, the application fields of thermoforming machines have been expanding, which have expanded from traditional food and pharmaceutical applications to include electronics, toys, daily chemicals, and logistics sectors electronics, toys, daily chemicals, logistics and other fields, providing strong support for the upgrading of product packaging in various industries. The finished products may exhibit various defects that affect both quality and sales performance.
The Following are Common Situations:
1. Water ripples: Depending on material type and processing techniques, finished products may exhibit surface water ripples.Water ripples appear on products made of transparent material, which will affect the aesthetics of the product. Generally speaking, the thicker the product, the more obvious water ripples. Among all kinds of materials, PVC material is more prone to water ripples.
2. Crystal point: Crystal points occur when airborne micro-particles deposit on heated sheets during production. process of the thermoforming machine.
3. Scratches: During the production process, the friction between the outer wall of the product and the machine will form scratches on the outer wall of the product. Minimizing mechanical friction and maintaining optimal surface finish are critical for scratch prevention.
4. Drawing: When unintended linear ridges appear despite no corresponding relief in the mold design. We solve this situation, first of all in the modification of the mould (reduce the height, increase the pressure mould as well as increase the degree of roundness). The products with drawing can not be used as high-grade packaging use.
5. Air bubbles: Plastic materials contain air, and the products produced after heating will have air bubbles.
Thermoforming Methods by Pressure Application:
Vacuum Forming Machine: Utilizes vacuum pressure to adhere the sheet to the forming.
Negative Pressure thermoforming Machine: The negative pressure is applied to the front side of the film by the air compressor to make the sheet fit the mould.
Positive and Negative Pressure Thermoforming Machine: creates a high differential pressure through combined positive and vacuum pressureto mould the sheet.